Question bank/JEE Main/Physics

When photon of energy
[IMAGE] strikes the surface of a metal A, the ejected photoelectrons have
maximum kinetic energy Ta eV and de-Broglie
wavelength[IMAGE]. The maximum kinetic energy of photoelectrons liberated
from another metal B by photon of energy
[IMAGE] is [IMAGE] If the de-Broglie wavelength of these
photoelectrons[IMAGE], then the work function of metal B is

A2 eVB3 eVC1.5 eVD4 eV

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Relation between De-Broglie wavelength and K. E. is

Source: Grass-G / Ph-28 Physics paper FST 16 Jan.docx